He teaches public international law, international economic law including the law of the WTO and International Investment Law, European Union law and air and space law.

He has published about 25 books as author or editor and 220 articles on constitutional law, public international law, European and international economic law as well as air and space law.

Professor Hobe is also a member of the ICSID Panel of Arbitrators, having been nominated by the Federal Republic of Germany.

He serves on the Board of Directors of the German Branch of the International Law Association (ILA) as well as the boards of various other international organizations and institutions, inter alia the Council of the German Society of International Law.